I keep feeling frustrated as valuable knowledge for my different hobbies over the last years became siloed away in corporate social media. I believe wikis could be a way out, but can we have decentralized, federated wiki software that can kind of talk among each other?
Hyperlinks exist?
The benefit of federation would be shared accounts. Which aren’t at all needed.
Like, you mention fandom. They have more or less killed wikis. They were not the norm a decade ago. And it was pretty common to see the trivia section for an actor or actress say “And they were in star wars!! WOOKIEPEDIA removed!” as a link
And that is how the internet worked. That site about engine repair? If they felt there was a good site on how to do timings for a transmission or whatever, they would link to that. And they might even contribute on multiple message boards with multiple accounts.